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Trophic Levels

Identify the ...

Question

Identify the autotrophs from the following:

A

They bind to the substrate and the complex reduces the activation energy

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B

They induce changes in the chemical state of the substrate leading to increase in the speed of the reaction

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C

The speed increases due to the increase in heat during the ES complex formation

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D

The reaction is catalyzed by free energy change

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Solution

The correct options are
B
They induce changes in the chemical state of the substrate leading to increase in the speed of the reaction

D
The reaction is catalyzed by free energy change

Autotrophs make their own food from the raw materials available in the atmosphere. Green plants make their own food. Moss is a green plant. Spirulina is filamentous blue-green algae which perform photosynthesis.

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Similar questions

Q. Identify the wrong statemets.

(a)

The substrate binds to active site of enzyme and not fitting into active site

(b)

The binding of substrate induces the enzyme to alter its shape

(c)

Chemical bonds of substrate break down not to form new enzyme-product complex

(d)

The enzyme releases the products of the reaction and runs through catalytic cycle once again

Q. Identify the wrong statements:

(A) The substrate binds to the active site of the enzyme and not fitting into the active site.
(B) The binding of the substrate induces the enzyme to alter its shape.
(C) Chemical bonds of the substrate does not break down to form new enzyme-product complex.
(D) The enzyme releases the reaction and runs through the catalytic cycle once again.

Q. Arrange the steps of catalytic action of an enzyme in order and choose the right option.

(i)

Enzyme releases products of reaction and the enzyme is free to bind to another substrate.

(i i)

Active site of enzyme is in close proximity of substrate and breaks the chemical bonds of substrate.

(i i i)

Binding of substrate induces enzyme to alter its shape fitting more tightly around substrate.

(i v)

Substrate binds to active site of enzyme fitting into active site.

Q. Read the following four statements (A-D):-
(A) Thermal stability is an important quality of enzymes which are isolated from thermophilic organisms.
(B) Formation of Enzymes substrate complex, during enzymatic reaction, is an facultative phenomenon.
(C) Enzymes bring down the energy barrier between substrate and transition state to make the transition of substrate to product easy.
(D) The essential chemical components of many coenzymes are proteins and vitamins.
How many of the given statements are right?

Q. The catalytic cycle of an enzyme action can be described by the steps given below:

(A) The active site of enzyme, now in close proximity of the substrate, breaks the chemical bonds of the substrate and the new enzyme-product complex is formed.
(B) The binding of the substrate induces the enzymes to alter its shape, fitting more tighty around the substrate.
(C) The substrate binds to the active site of the enzyme, fitting into the active site.
(D) The enzyme releases the products of the reaction and the free enzyme is ready to bind to another molecule of the substrate and run through the catalytic cycle once again.

Arrange them in the correct sequence.

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